Porta Cabin Sizes in India: Standard Dimensions, Custom Layouts & Specifications

Porta cabin sizes in India start at 8×8 ft for a single-occupant security or guard cabin and stretch to 30×40 ft and beyond for multi-room buildings, with SAMAN’s catalogue covering the most-deployed dimensions in between. Prices begin at ₹1,25,000 for a factory-built 10×10×9 ft unit and run past ₹5,35,000 for a 35-ft long-narrow layout, with custom builds available outside the standard catalogue. This guide gives you the full size ladder — in feet and metres — with what each layout fits, the frame and panel spec that comes with it, indicative starting prices, and the transport reality of getting a 20-ft-plus cabin to your Indian project site.

The full porta cabin size range in India — from 6×6 ft to 30×40+ ft (at a glance)

Buyers in India ask for porta cabin sizes in feet, manufacturers spec them in feet and metres, and architects often request the metric equivalents for compliance sheets. The table below maps every commonly-requested size band to its best-fit use case, the SAMAN catalogue product that ships closest to that footprint, and the starting price you should expect.

Each row is a size band, not a single fixed dimension. SAMAN configures the exact internal layout — door positions, window count, partition walls, toilet inclusion — to your spec within these bands. For dimensions above 35×11 ft single-shell or any multi-unit project, the order moves to custom-build with a lead time of 28 to 35 working days.

What “standard porta cabin size” actually means — and why 10×10 ft is the Indian baseline

The standard porta cabin size in India is 10×10 ft (about 3×3 m). It’s the most-requested entry layout for single-room site offices, RWA guard posts, and small shop kiosks. SAMAN builds standard porta cabins from 8×10 ft up to 35×11 ft, with custom sizes available beyond. The 10×10 baseline assumes a single occupant or a two-person workstation.

Why 10×10? Two reasons. First, the footprint fits on a standard Indian 10-ft-wide truck bed without a long-vehicle road permit, which means delivery to most project sites without RTO paperwork delay. Second, the internal usable area of about 93 sq ft holds a single desk, a chair, a filing cabinet, and a wall-mounted AC unit comfortably — the working layout for a one-person site office. Step up to 10×20 ft and you fit two desks; step down to 8×10 ft and the chair-clearance starts to feel tight after a printer or storage cupboard goes in.

SAMAN’s SAMAN porta cabin models catalogue carries multiple options that match or exceed this baseline — the entry Mini Porta Cabin ships at 10×10×9 ft from ₹1,25,000, and larger configurations scale up from there.

Porta cabin sizes in meters — quick-convert reference for spec sheets and compliance

Architects, MEP consultants, and government-tender bidders need porta cabin sizes in meters for spec sheets and compliance drawings. Here is the conversion for the most-used Indian size bands:

• 8×8 ft = 2.44 × 2.44 m — 5.95 sq m
• 8×10 ft = 2.44 × 3.05 m — 7.43 sq m
• 10×10 ft = 3.05 × 3.05 m — 9.29 sq m (the standard baseline)
• 10×20 ft = 3.05 × 6.10 m — 18.58 sq m
• 12×20 ft = 3.66 × 6.10 m — 22.30 sq m
• 20×20 ft = 6.10 × 6.10 m — 37.16 sq m
• 35×11 ft = 10.67 × 3.35 m — 35.75 sq m

Internal clear height is typically 9 ft (2.74 m) inside the cabin, dropping to about 8.5 ft (2.59 m) after the false ceiling and electrical conduit are installed. For BOQ submission and clearance calculations, work backwards from the clear-internal figure rather than the external footprint.

Porta cabin dimensions and specs by size — frame, panel, and floor load per size band

Porta cabin dimensions alone don’t tell you whether a cabin will perform. The frame gauge, panel grade, and floor load capacity all scale with size — a 10×10 ft cabin and a 35-ft-long cabin need different structural standards, and a manufacturer that ships both at the same spec is overpricing the small one or underspeccing the large one.

Compact and standard band (up to 10×10 ft). Mild-steel frame at 50×50 mm box section, 2.5–3 mm wall thickness. PUF panels at 50 mm thickness with 0.5 mm GI sheet skin. Floor load rated to roughly 350 kg/sq m — adequate for office furniture and a single occupant with belongings. The SAMAN 10×10 ft mini porta cabin ships at this band spec.

Medium band (10×20 ft to 20×20 ft). Frame steps up to 75×75 mm box section, 3 to 3.5 mm wall thickness. PUF panels often remain at 50 mm; premium variants move to 75 mm for thermal performance in summer-heat regions. Floor load rated to roughly 450 kg/sq m for office and small-equipment use. Wind-load resistance specified for typical Indian inland gusts up to 130 km/h.

Large and long-narrow band (above 20×20 ft, and 35×11 ft type layouts). Frame moves to 100×100 mm box section at 4 mm wall, with cross-bracing at panel joints to keep the long-narrow geometry rigid in transit and during crane lift. PUF panels at 75 mm minimum, with 0.6 mm GI sheet on the exterior face. Floor load up to roughly 600 kg/sq m for accommodation use with multiple occupants, bunk beds, and personal belongings.

Electrical load planning scales with the band too — a 10×10 cabin gets a 16-amp single-circuit DB; a 35×11 unit gets a 32-amp multi-circuit DB with separate provisions for AC, lighting, and small power. SAMAN ships every cabin pre-fitted to the appropriate band; the structural mild-steel frame carries a 5-year warranty, with finishing items (panels, doors, electricals) covered for 1 to 2 years.

Standard vs custom porta cabin size — where the catalogue ends and bespoke begins

The cross-over from catalogue to custom build happens at three boundaries — and knowing which one you’re crossing tells you what the price and lead-time delta will be.

Boundary 1 — Non-rectangular footprint. Any L-shape, T-shape, or curved-wall configuration falls outside the catalogue. The frame jigs, panel cuts, and roof flashing all need bespoke fabrication. Lead time stretches from the catalogue 7 to 14 working days to around 28 to 35 working days. Price uplift is typically 15 to 25 percent over the rectangular equivalent in the same band.

Boundary 2 — Multi-room within a single shell. A standard cabin is a single open volume. Any internal partition wall, attached toilet inside the same shell, or two-room internal layout moves into a configuration the catalogue does not carry as a fixed SKU. Lead time matches Boundary 1; price uplift is around 10 to 20 percent for the partition plus extra door plus duplicate finishing. The SAMAN 35-ft long-narrow luxury layout sits at this boundary’s edge — a 35×11 ft single shell that hosts up to three internal zones at a catalogue price of ₹5,35,000.

Boundary 3 — Beyond the largest catalogue single-shell, or any multi-unit project. Anything past the 35×11 ft catalogue ceiling moves to pure project mode — site survey, drawings, sign-off, then build. Lead times begin at 35 working days; price moves to a per-sq-ft quotation rather than an SKU price.

The practical rule: if you can describe what you need in one sentence and the answer is “standard rectangle, single room, under 35 ft long,” the catalogue probably has it. Anything else is a quote.

Will your site take a 20-ft porta cabin? Indian transport and permit realities

A porta cabin that fits your site footprint can still fail to reach it. Indian transport rules and road infrastructure put hard limits on what trucks can carry — and what permits you’ll need before delivery.

Truck bed width. Standard Indian trailer beds are 8 ft wide; high-capacity flat-beds run to 10 ft. Any cabin wider than the truck bed (almost any 12-ft-wide unit, all 14-ft units) needs either a wide-load permit or a low-bed trailer with side-overhang clearance — both add ₹15,000 to ₹40,000 to transport cost.

Length and the RTO long-vehicle permit. Cabins up to 20 ft long ship on a standard trailer without state RTO long-vehicle paperwork. Anything 20 ft and above triggers a permit requirement in most Indian states, with a 2 to 4 working day lead time for clearance.

Height clearance. Standard porta cabin external height is around 9 to 10 ft. Add the trailer bed at roughly 4 ft, and total transport height hits 13 to 14 ft. Most Indian highways clear this; urban under-bridges and metro-line overpasses do not. A pre-delivery site recce — the last 5 km of the route specifically — is non-negotiable for any cabin above 10 ft external height.

Crane and offloading. Cabins above 20 ft typically need crane offloading; under 20 ft can be slid off a tilt-bed trailer. Crane hire adds ₹8,000 to ₹15,000 in metros, more in remote sites. For how this rolls into total project cost, the porta cabin pricing breakdown covers the full delivered-cost math including transport, crane, and RCC plinth.

Frequently asked questions: porta cabin sizes in India

What porta cabin size is best for a site office?

For a single-engineer site office, 10×10 ft is the standard — it fits a desk, chair, filing cabinet, and a wall-mounted AC. For 2 or 3 site staff with a meeting corner, step up to 10×20 ft or 12×20 ft. Beyond 3 occupants, 20×20 ft or larger handles workstations plus storage plus a small meeting zone.

How many people fit in a porta cabin?

Allow 4 to 5 sq m per person for an office layout, and 3 sq m per person for sleeping accommodation. A 10×10 ft cabin (about 9 sq m) comfortably fits 2 desks. A 20×20 ft cabin (37 sq m) holds 6 to 8 office workstations or up to 12 sleeping berths in a labour-colony configuration.

Can porta cabin sizes be customised?

Yes. Rectangular sizes between 8×8 ft and 35×11 ft are available as catalogue configurations with 7 to 14 working day lead times. Beyond that — or for L-shapes, multi-room internal layouts, attached toilets, or non-standard heights — SAMAN builds to your drawing with a 28 to 35 working day lead time.

What is the largest porta cabin size SAMAN ships?

The largest single-shell catalogue layout is the Luxury Porta Cabin at 35×11 ft. Anything beyond that — full multi-room buildings, labour colony stacks, or multi-storey portable cabin configurations — moves to project-build mode with site survey, structural drawings, and a per-sq-ft quotation.

Will my site need a road permit for a 20-ft porta cabin?

Cabins 20 ft long and above generally require an RTO long-vehicle transport permit in most Indian states. The permit clears in 2 to 4 working days. Width above 10 ft also triggers a wide-load permit. Below 20×10 ft, no special paperwork is usually needed.

Get a porta cabin quote — talk to SAMAN

Pick the size band that matches your use case and we’ll confirm the exact internal layout, frame spec, and INR price for your project. Both manufacturing units ship pan-India.

Bangalore — Call +91 80886 85440 | WhatsApp +91 88616 22859
Delhi NCR — Call +91 87960 39938 | WhatsApp +91 97089 89937